Telefunken
1x Telefunken EF804S Orig. Box - ◇ Bottom - Ulm, 1959 - Strong
1x Telefunken EF804S Orig. Box - ◇ Bottom - Ulm, 1959 - Strong
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$129.00 USD
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Product Summary
Model: 1959 Telefunken EF804S (Made in Germany)
Soundlumia Tube Sound Rating: 9.5/10 - Outstanding
Late 1950s Ulm, Germany production - Unparalleled sound characteristics and superb build quality - True holographic sound stage with layered details and ultra clarity
Date codes: U4109504 (U = Ulm, 9 = 1959)
GM (Mutual Conductance) test result: 86% of NOS/NEW
Silkscreen: 90% - 100%
Packaging: Original Telefunken tube box.
Professional Tube Testing
This set was tested and certified by RoeTest V11 Professional Tube Testing System with the following result:
Tube 1:
Measured transconductance(GM): 1.73 mA/V - 86% (100% = 2.00 mA/V)
Measured plate current(IA): 2.515 mA - 84% (100% = 3 mA)
NO shorts, leakage or gas. NO noise or microphonics.
Curve trace is also included in the original RoeTest report.